Softwareserial.h Library 【DIRECT】

// Define the RX and TX pins for the SoftwareSerial instance const int rxPin = 2; const int txPin = 3;

#include <SoftwareSerial.h>

void setup() Serial.begin(9600); ss.begin(9600); ss.println("Hello"); delay(10); while(ss.available()) Serial.write(ss.read()); softwareserial.h library

For 9600 baud, each bit lasts approximately 104.16 microseconds ( 1 / 9600 ). The library must generate or sample these pulses with minimal jitter. Any interrupt (e.g., from delay() , millis() , or other libraries) can corrupt the timing, causing or garbled data. // Define the RX and TX pins for

The SoftwareSerial library is a popular and versatile library used in Arduino to enable serial communication on any digital pin. This library is particularly useful when working with devices that require serial communication, but the board's hardware serial pins are already occupied. const int txPin = 3